Document Type

Article

Publication Date

2022

DOI

10.1103/PhysRevLett.128.252002

Publication Title

Physical Review Letters

Volume

128

Issue

25

Pages

252002 (1-7)

Abstract

We report high-precision measurements of the deeply virtual Compton scattering (DVCS) cross section at high values of the Bjorken variable 𝓍B. DVCS is sensitive to the generalized parton distributions of the nucleon, which provide a three-dimensional description of its internal constituents. Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton form factors (CFFs) of the nucleon as a function of 𝓍B, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.

Comments

Β© 2022 American Physical Society

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Original Publication Citation

Georges, F., Rashad, M.N.H., Stefanko, A. ... Zhang, J., Zhao, Y., Zhu, P. (2022) Deeply virtual Compton scattering cross section at high Bjorken 𝓍B. Physical Review Letters, 128 (25), 1-7, Article 252002. https://doi.org/10.1103/PhysRevLett.128.252002

ORCID

(0000-0002-4136-2572) Bulumulla, (0000-0001-7282-8120) Hyde

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